Global Patent Index - EP 3165056 A1

EP 3165056 A1 20170510 - POWER CIRCUIT AND DIMING CONTROL METHOD FOR LED LIGHTING DEVICE

Title (en)

POWER CIRCUIT AND DIMING CONTROL METHOD FOR LED LIGHTING DEVICE

Title (de)

LEISTUNGSSCHALTUNG UND DIMMUNGSSTEUERUNGSVERFAHREN FÜR LED-BELEUCHTUNGSVORRICHTUNG

Title (fr)

CIRCUIT D'ALIMENTATION ET PROCÉDÉ DE COMMANDE D'ATTÉNUATION POUR DISPOSITIF D'ÉCLAIRAGE À DEL

Publication

EP 3165056 A1 20170510 (EN)

Application

EP 15812663 A 20150429

Priority

  • CN 201410288612 A 20140624
  • CN 2015077795 W 20150429

Abstract (en)

[origin: WO2015196863A1] A power circuit for an LED lighting device including an alternative current (AC) power supply, a dimmer, a transformer and a dimming control circuit. The dimming control circuit includes a filtering unit configured to filter a voltage signal outputted from the transformer and a rectifying unit configured to receive the signal outputted from the filtering unit and rectify the signal to a DC signal. The dimming control circuit also includes a boost converter unit configured to boost the received DC voltage to a needed DC voltage and a voltage feedback control circuit unit configured to control the DC voltage boosted by the boost converter unit. Further, the dimming control circuit includes a buck converter unit configured to convert the boosted DC voltage to the voltage and current needed by the LED lighting device and a digital control unit configured to automatically adjust current strength needed by the buck converter unit.

IPC 8 full level

H05B 37/02 (2006.01); H05B 44/00 (2022.01)

CPC (source: EP KR US)

H05B 45/10 (2020.01 - EP KR US); H05B 45/37 (2020.01 - KR); H05B 45/3725 (2020.01 - EP US); H05B 45/375 (2020.01 - EP US); H05B 45/38 (2020.01 - EP US); H05B 47/10 (2020.01 - KR)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

WO 2015196863 A1 20151230; CN 104066247 A 20140924; CN 104066247 B 20170201; EP 3165056 A1 20170510; EP 3165056 A4 20180328; JP 2017504934 A 20170209; JP 6235720 B2 20171122; KR 101879115 B1 20180716; KR 20160111537 A 20160926; US 2016255688 A1 20160901; US 9826584 B2 20171121

DOCDB simple family (application)

CN 2015077795 W 20150429; CN 201410288612 A 20140624; EP 15812663 A 20150429; JP 2016538589 A 20150429; KR 20167025123 A 20150429; US 201515028787 A 20150429